Improvement in plow-beams



UNITED STATES PATENT EEIoE.A

CORNELIUS KIMPLEN, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN PLOW-BEAMS.

' Specification forming part of Letters Patent No. 158,642, datedJanuary 12, 1875; application filed April 14, 1874.

To all whom it may concern:

Be it known that I, CORNELIUS KIMPLEN, of Chicago, Illinois, haveinvented certain new and useful Improvements in Plow-Beams, of which thefollowing is a full description, reference bein g4 had to theaccompanying drawings, in which- Figure l is a side View; Fig. 2, a rearView, and Fig. 3 a cross-section.

Plow-beams have been heretofore made of v iron; but when made ofwrought-iron or steel it has been difficult and expensive to draw theminto proper shape, so as to give them the required strength at the rightplaces without. getting an unnecessary weight, besides the dit'-tculties of giving suitable and uniform shape, and in casting them greatweight has been required iu order to give the necessary strength.

My improvement-s overcome these difficulties; and their nature consistsin making the beam otl cast metal, by preference malleable cast-iron; inproviding such beam with branches for connecting and bracing the severalparts needed to complete the plow.

In the drawings, A represents the beam proper; C, the downwardextension, forked into two branches, D and E 5 B, a rearward extensionfor attaching the land-side plowhandle, the lower end of the handleresting in the bracket or projection F, to which it is bolted orscrewed. Gr is an angular bracket or projection cast with the extensionC, for

connecting the upper and front edge Oli the mold-board; and H, aclevis-head, c ast so as to form one piece with the beam.

The beam a'nd its extensions are cast in suitable form, being made theheaviest at the main curve, but is made as light, or nearly as light, asa wrought-iron beam, and is then converted into malleable iron by theusual process.

The spread or arms D E are curved outward, as shown at Fig. 2, so thatthe beam will stand a little in from the land-side, which is to beconnected to them to give the plowbeam the proper direction, and to keepthe part C free from weeds.

All of the parts shown are cast in one piece with the beam.

To complete a plow, the mold-board with its handle and the land-side andpoint are made Aof steel or other material, in any of the usual orwell-known modes.

By making the beam of malleable cast-iron I am able to combine all ofthe advantages ot' wrought and cast iron beams in my beam, as I secure aproper distribution of the metal. an d obtain a light, strong beam,cheaplyT made, and to which the parts necessaryT to complete a plow areeasily attached.

What I claim as new is as follows:

1. The combinations of the beam A and extensions B and C with thebracket G, all cast in one piece, substantially as and for the purposesspecified. I

2..'Ihe combination of the beam A, extensions B and C, brackets F and G,and clevis H,substautially as and for thepurposes specitied.

CORNELIUS KIMPLEN.

Witnesses E. A. WEST, 0. W. BOND.

